12221968433 has 2 divisors, whose sum is σ = 12221968434. Its totient is φ = 12221968432.

The previous prime is 12221968411. The next prime is 12221968441. The reversal of 12221968433 is 33486912221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12221744704 + 223729 = 110552^2 + 473^2 .

It is a cyclic number.

It is not a de Polignac number, because 12221968433 - 2¹⁰ = 12221967409 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221938433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110984216 + 6110984217.

It is an arithmetic number, because the mean of its divisors is an integer number (6110984217).

Almost surely, 2^12221968433 is an apocalyptic number.

It is an amenable number.

12221968433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221968433 is an equidigital number, since it uses as much as digits as its factorization.

12221968433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The spelling of 12221968433 in words is "twelve billion, two hundred twenty-one million, nine hundred sixty-eight thousand, four hundred thirty-three".